Ventilator.



G. H. FORSYTH.

VBNTILATOR.

APPLICATION FILED APR. 13. 1908.

945,227, Patented .111114.19111 GEORGE IH. FORSYTH, 0F CHICAGO,ILLINOIS.

i VENTILATOR.

Specification of Letters Patent.

Patented Jaaa, 1910.

Application led April 13, 1908. Serial No. 426,877.

To all whom 'it may concern.

Be it known that I, GEORGE H. FoRsY'rH, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and 'useful Improvements inVentilators, of whichthe following is a specification.

This invention relates to ventilators, having reference moreparticularly to car ventilators of that type wherein the deck sash ispivoted horizontally at its lower corners and is adapted to swinginwardly of the car in its opening movement. A serious objection toventilators of this type resides in the fact that ready access isthereby permitted for rain, snow, sleet and drafts throu h the ends ofthe ventilators when open; a so, in cold weather, it is practicallyimpossible to properly ventilate the car without involving the loss ofmuch heat that is swept out o the car by the incoming drafts, to saynothing of the discomfort imposed upon passengers thereby. a My presentinvention has forits principal object to provide a simple, inexpensive,reliable and easily manipulated closuredeviceV for the end openings ofthe ventilator, so as to limit the space or passageway for thecirculation of air between the inside and outside of the car to theopening formed between the upper edges of the sash when the latter isopen and the upper edge ofthe sash frame or casing.

To this end myinvention consists substantially, as to this feature, inthe combination with a movable ventilator sash, of a device adapted toclose the end opening between the sash and its frame when the sash isopen,

- which closure device is automatically moved to operative positionwhentlie sash is opened, and eects the closure of said opening whetherthe sash be fullyv orbut Jpartially opened. In the preferred form o theinvention herein shown and described, this closure takes the form of apivoted and foldable shutter of substantiall triangular formcorresponding to the out ine form of the opening designed to ,be coveredthereby, whiclfishutter, when in closed position, overlaps the end ofthe sash, and is opened out into a plane approximately at right anglesto the plane of the sash when the latter is fully o ened.

Anot er feature of my invention resides in a new -and improved actuatingdevice adapted to simultaneously open and close two adjacent sashes andto effect a tight closing of both irrespective of slight variations inthe planes of the sash openings, which device also holds thesash againstjarring loose from yits snug fit in its casing.

My invention will be readily understood when considered in connectionwith the accompanying drawings which illustrate one practical mechanicalform in which the same may be embodied, and in which,-

Figure 1 is a front elevational view, from the inside of a car, of theadjacent ends of two deck sash ventilators, showing a pair of myimproved shutters applied thereto with my improved operating meanstherefor. Fig. 2 is a cross-sectional View on a ,somewhat enlarged scaleon the line 2-2 of Fig. 1, viewed in the direction indicated by thearrows, and showing the sash ,and end shutter in open position. Fi 3 isa cross-sectional `view on line 3 3 o Fig. 1, viewed in the directionindicated by the arrows. Fig. 4 is a horizontal section on the line 4--1of Fig. 1, viewed in the direction indicated by the arrows. Fig. 5 is adetailcross-section on the line 5 5 of Fig. 2, with the shutteroperatingrod and its cushionin spring omitted or the sake of clearness. gFig. 6is a detail cross-sectional view n the line 6-6 of Fig. 2, looking.downwardly. Fig. 7 is a detail of the shutter hinge.4

Referring to the drawings, i 10 and 11 designate the upper and lowerportions of the car-deck structure, between which are located the decksashes 12 suitably spaced by intervening upright posts or frame-members.13, the members 10, 11 and 13 unitedly constituting-thejambs or casinof the sashes 12, which latter are pivota ly mounted in and between thepartition posts ory upri lits 13 on horizontal hinge-pintles 14 locateat the 'lower corners ofeach sash, thus leaving the sash free to swingat its upper end inwardly and outwardly of the opening closed thereby.

The means for opening and closin the sash as herein shown consists ofthe fo lowing mechanism: 15 designates a U-shaed bracket member, that is,Strongly secure as by screws 15b tothe lower and inner sides of themember u11, projectin inwardly from the latter. The two ara lel sidearms of the bracket 15 are longitudinally grooved, as shown at 15, toreceive the trnnnions 16 of act as a fulcrum whereby, through a slightcontinued movement of the rod 19, the equal- .ings 23*l (Fig. 5) formedin the outer ends of the handle 20 in which the lower end of turnin thehandle 20 in a direction to screw 12 will be swung on their pivots toclosed an internally threaded sleeve or nut 17, the trunnions 16beingconfined in proper position by a coperating U-shaped member 18interposed between the bracket 15 and the inner wall of the frame-member11, with the parallel side arms of the member 18 lying in the slots'15a,and their inner ends concaved to form half-bearings for the trunnions,as clearlyy shown in Fig. 6. `The nut 17 is engaged bya threaded rod 19,to the lower end of which is secured va suitable handle 20 for operatingthe same, while its upper end por-- tion is reduced in diameter and isextended through an opening 21a in a-central hub 21 formed on anequalizer-bar 22, the ends of which latter are rotatably mounted inbearof bracket arms 23 secured to the lower adjacent corners of twoadjacent sash frames l2. The upper projectingl end of `the threaded rod19 vabove its bearing in the equalizer-bar 22 is secured by suitable.nuts 24; while a coiled compression spring 25l is interposed betweenthe hub 21 of equalizerbar 22 anda stop 26 on the rod 19 formedat thebase of its reduced upper portion. It will be observed by reference toFig. 5 that the walls of the -bearings 21a and 23a accommodating the rod19 and equalizer-bar 22, respectively, are rounded or convexed so as toprovide loose bearings permitting a limited universal angular movementbetween said members and their respective bearings for lpurposes whichwill hereinafter appear. The threaded portion of the rod 19 may furtherbe provided with a stop 27 at its lowerk end, said stop beingconveniently formed on the upper end of the stem said threaded rod 19 issecured.

From the foregoing it will be seen that by the ro 19 upwardly, the twosash-members position; and it will be further observed that in case theydo not close simultaneously or under equal extents of movement, thebearing 23a of that sash which closes rst will izerbar-22 will rock toyforce the other sash to a close fit in its casing, thus insuring thecomplete and eilective closing of both sashmembers by a single commonoperating device, lirrespective of variations in the extent of travelrequired to effect such closing.

Referring now Ato the 4.feature of the end closure, in which'my presentinvention principally resides, 28 designates as an entlrety atriangular-shaped shutter, preferably of glass, mounted 1n a sheet-metalframe or holder, a pair of which shutters, having somewhat the form 'andappearance of the wings of a butterfly, are pivotally mounted on theinner face of the upright partition i post 13, or on a metal face-plate13a secured thereon. As the manner and`I means of mounting of each ofthese shutters are duplicates, a description of one will suflice forboth. On the face of the plate 13a aresecured lixed upper, central andylower hingemembers 29 in which is journaled a hingepintle 30; andintegral with or secured to the adjacent frame-member of the shutter area series of hinge-members l33 embracing said 75 spindle. Betweenadjacent hinge-members 33 and surrounding the spindle are torsionsprings 34, the ends of which bear respectlvely upon the faces of theplate13a and the outer face of the frame of the shutter, so that thenormal torsional effect of these springs is to maintain the shutterfolded over the end of the sash.

It will be observed that the shutters are A hinged on axes disposedobliquely or at an S5 acute angle to the vertical edge of the sash'-casing formingI one e'nd of the sash opening. By reason of thisarrangement, the edge end of the sashA lies in contact throughoutitsfull' extent with the inner face of the shutter throughout the entireopening movement of the sash'and shutter, or at all open positions ofthe sash, which would not be the case were the shutter hinged on a lineparallel withthe vertical edge of the sash-casing. .f When the sash isopenedthe shutter is maintained ,in open position against the closingeiiec't of the sprlngs 34 by the abutment of the sashagainst the freeend edge of the shutter, as clearly shown in Fig. 2. f

The 'spring 2.5 exerts a constant tension holding bot-h sashes closedexcept when the Y latter areopened, and by its back pressure on thescrewprevents accidental back turning of the latter under the jars andvibralos tion to which the car is subjected in travel. The upper stop 26limits the extent of opening movement of the sash through engagementwith the upper end of the bracket 15;

and the.. lower stop 27 prevents possible |10 breakage or other injuryto the sash-actuating arms 23 and also limits the extent of compressionof spring 25, preventing the latter from being compressed solid.

While the described manner of hinging the shutters .on lines inclined oroblique to the vertical edges of the sash-casing is preferred for thereasons stated, yet this feature is not essential to the carrying out ofthe invention and Vthe attainment of the result secured thereby. l i

I am aware that other variations and modifications in the structuraldetails ofthe device might be made without departing from the substanceof the invention, and hence Il do not limit the invention to theparticular mechanism disclosed, except to the extent -indicated inspecific claims.

l claim:

1. The combination with a movable sash,

is' open, to close the opening between an edge of the sash and the sashcasing.

2. The combination with a movable sash, of a pivoted shutter adapted,whenl the sash is open, to close the opening between an edge of the sashand the sash casing.

3. The combination with a movable sash, of a pivoted shutter adapted,when the sash is open, to close the opening between an edge of thesashand the sash casing, and, when closed, to fold over said edge of thesash.

4:. The combination with a sash `having an edge movable toward and fromthe sash casing, of a shutter movable with the sash and servingl toclose `the opening between said movable edge of the sash and the casing.

5; The combination with a sash having an edge movable toward and fromthe sash casing, of a shutter adapted to be operated by the sash in theopening movement and when so operated closing the opening between saidmovable edge of the sash and the casing.

6. The combination with a pivoted sash,

of a shutter, movable with the sash and serving to close the openingbetween an edge of the sash and the sash casing.

7. The combination with a swinging sash,

, of a shutter pivoted at an angle to one of the edges of the sashcasing and adapted to be engaged bya free edge of the sash during theopening movement of the latter.

8. The combination with a swinging sash, of a shutter pivoted at anangle to one ofthe edges of the sash casing and adapted to becontinuously engaged by one of the angularly'movable edges of thesashduring the opening movement of the latterusaid edge of the sashengaging the shutter throughout its full extent inlall open positions ofthe sash.

9. The combination with a plurality of I movable sashes, .ofsash-actuating means common to said sashes and operating to lfullylclose all of said sashes irrespective of variations in the fit of thelatter or the extent of closing movement required.

l 10. The combination with a plurality of movable sashes, of asash-actuating device,

and an equalizer between said sashes whereby all of the latter are fullyclosed when said actuating device is operating to effect the closingmovement of the sashes.

11. The combination with a plurality of movable sashes, of asash-actuating device, and an elastic equalizer between sa1d sasheswhereby all of the latter are fully closed under spring pressure whensaid actuating device is operated to effect the" closing movement of thesashes.

12. The combination with a plurality of movable sashes, of an equalizerbetween said sashes, and a sash-actuating device operating throu h saidequalizer to eect the complete closing of all of said sashes.

13. The combination with a lurality of movable sashes, of anequalizer-bar between and connected to said sashes, and a sash-actuatingdevice including a spring operating through said equalizer-bar to eHectthe complete closing of all of said sashes.

14. The combination with a pair of movable sashes, of an equalizer-barbetween and loosely connected at its ends to said sashes, and asash-actuating device engaging said equalizer-bar. between its ends.

15. The combination with a pair of movable sashes, of an equalizer-barbetween and loosely connected at its ends to said sashes, asash-actuating device operatin on said equalizer-bar between its ends,an a spring through which said sash-operating device operates on saidequalizer-bar duringV the closing movement of the sashes.

16. The combination with a pair of movable sashes, of an equalizer-barbetween and loosely connected at its ends'to said sashes, ascrew-threaded rod loosely engaging said equalizer-bar between the endsof the latter, a threaded sleeve forming a bearing for said rod, meanswhereby said rod may be turned and a spring through which the thrust ofthe rod is imparted to the equalizer-bar.

` GEORGE H. FORSYTH.

- Vitnesses:

, SAMUEL' N. POND, JAMES R. OFFIELD.

